Jump to main content
Jump to site search

Issue 28, 2018
Previous Article Next Article

Three novel Co(II)/Ni(II)-based coordination polymers as efficient heterogeneous catalysts for dye degradation

Author affiliations

Abstract

Three novel networks, namely, {[Co(HL)2]}n (1), {[Co(L)(H2O)]·[Co3/2(L)(OH-Hbdc)(H2O)2]·H2O}n (2), and [Ni(L)(H2O)5]·DMF·4H2O (3), where H2L = 4′-pyridin-4-yl-biphenyl-3,5-dicarboxylic acid and OH-H2bdc = 5-hydroxyisophthalic acid, have been hydrothermally synthesized and characterized. Compound 1 is a two-dimensional (2D) layered structure of Co2+ ions coordinated with incompletely deprotonated HL ligands. Compound 2 is a crystal in the triclinic space group P[1 with combining macron] and shows a very rare 2D + 2D heterogeneous framework built from 3-connected {63} hcb layers and 4-connected {44·62} sql layers. Compound 3 is a 0-D molecular complex crystallized in the chiral space group P212121, which suggests that symmetry breaking can be driven by the solvent-assisted homochiral helix without any chiral building blocks. In addition, their heterogeneous catalytic oxidation activities toward methyl orange (MO), methyl blue (MB), neutral red (NR), methylene blue (MEB), and safranine T (ST) and the mechanisms in the presence of H2O2 have been investigated in detail in aqueous solutions. The results show that the photocatalytic efficiency of NR is the highest for compounds 1–3.

Graphical abstract: Three novel Co(ii)/Ni(ii)-based coordination polymers as efficient heterogeneous catalysts for dye degradation

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 May 2018, accepted on 12 Jun 2018 and first published on 20 Jun 2018


Article type: Paper
DOI: 10.1039/C8CE00860D
Citation: CrystEngComm, 2018,20, 4042-4048
  •   Request permissions

    Three novel Co(II)/Ni(II)-based coordination polymers as efficient heterogeneous catalysts for dye degradation

    L. Qin, Q. Hu, Y. Wu, J. Cai and Y. Li, CrystEngComm, 2018, 20, 4042
    DOI: 10.1039/C8CE00860D

Search articles by author

Spotlight

Advertisements